Mitsubishi MELSEC Q Series User Manual

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6.6 I/O Assignment by C Controller Setting Utility
6.6.2 Details of I/O assignment by C Controller setting utility
6
I/O NUMBER ASSIGNMENT
(2) Precautions for I/O assignment
(a) Slot status after I/O assignment
When I/O assignment setting has been made to a slot, that setting has
precedence over the mounted module.
1) When the preset number of points is less than the number of I/O points
of modules actually mounted
The I/O points for actually mounted modules are decreased.
For example, when a slot, to which a 32-point input module is installed, is set
as a 16-point input module in I/O assignment setting, the second half 16 points
of the 32-point input module becomes invalid.
2) When the preset number of points is less than the number of mounted
intelligent function module points
An intelligent function module assignment error (error code: 2100, SP.UNIT
LAY ERR.) occurs.
3) When the preset number of points is greater than the number of I/O
points of modules actually mounted
The points in excess of the mounted module points are not used by the I/O
module.
4) Mounted module and assigned module types
The mounted module type and the set type in the I/O assignment setting must
be the same.
If not, normal operation will not be performed.
For intelligent function modules, make sure that the numbers of I/O points are
the same.
Table6.1 describes the operations performed when the mounted module type
differs from the one in the I/O assignment setting.
Table6.1 List of operations performed when mounted module differs from I/O assignment
Mounted module
I/O assignment
setting
Result
Input module
High-speed input module
Output module
I/O composite module
Intelli./Interrupt
Intelligent function module assignment error
(error code: 2100, SP. UNIT LAY ERR.)
Input module
High-speed input module
I/O composite module
Output
Input/High-speed input/Input and output
(Operates according to the type of the
mounted module.)
Output module
I/O composite module
Input/High-speed input
Output/Input and output
(Operates according to the type of the
mounted module.)
Intelligent function module
Interrupt module
Input/High-speed input
Output/I/O mix
Intelligent function module assignment error
(error code: 2100, SP. UNIT LAY ERR.)
Empty slot
Input/High-speed input
Output/I/O mix
Intelli./Interrupt
Empty slot
(All points turn OFF.)
All modules Empty
Empty slot
(All points turn OFF.)
Other combinations
No error will occur but normal operation is
not performed.

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English